Hydraulic rotary drilling-machine.



E. E. GREVE. HYDRAULIC ROTARY DRILLING MACHINE. I

APPLICATION rum) APR.9, 1913. 4

1,1 1 1 ,535. Patented Sept. 22, 1914 avwewio o STATES OFFICE; I

' nne'nn n. ennvn, or PITTSBURGH, rnNNsYnvnNiA, nssieNon T OIL WELLS-Uriah? To all mama may comm Be it known that 1mm E. Gnnvn, a

'7 citizen of the United States, residing-at Pittsburgh, in the county of; Allegheny and State of-Pennsylvania, have invented. oer.

' Itain new and useful Improvements in By draulic Rotary Drillin -Machines; ma I do hereby declare the 0 lowing to be a fell.

clear, and exact descriptionot-theinvention, such as will enable others skilled 1n the :art

to which appertains to make andnsethe same,

" My invention and intermediate deviceswhich permit of.

, the longitudinal vertical or feed movement ofthe drill stem. 1

The object of myinvention. is not only the simplification, of the means whereby the drill-stem is actuated from therotary table,

I and. the normal feed as well as the jumping of the drill stem are permitted, but also the provision of means whereby, when it is de-- sired to support the drill-string, slips and means'for movin the same may be readily combined-'with-t e ,rotar. table, thus "ena'hancing the usefulness of t e rotary drilling machine, as well as its durability, and also j saving the time andlabor'of the operator.

To this end one feature. of my invention.

embracesthe combination; with a rotary table having a central opening and provided with drive pins, of abushing-having means oi engagement with the dIIVG pins of the I 'table and with slips, and-slips having means I thedrive pins and with of engagement with the bushing.

v'ention involving; particular combinations n and elemental features of: construction all of, which'willhereinafter more fully appear.-

In the drawingsp-chosen for the purpose of illustrating-my invention,"v thev scope whereof is ointed out in the-claims, Figure"- firilfl'ia vertlcalfcentral section-of airotary 11g 'holding'a drill stem,-=and embodying my inmachinewith slipsin position for relates to" the constructionoi hydraulic rotary =fdrill1n machines, and

,the-driveshaft. i

in the upper surface U v v .ofrirotaryjtahle 9 far the reception-of drive-- There are other, n1inoi', features ofriin flomilPANY, OF PITTSBURGH, PENNSYLYANIA, A. CORPORATIONQF PENNSYLVANIA.

nrnnnumc' nornnv n s -rnuNe-mncnmnj I Specification of Letters latent. Patented $91,1 2 7 2, 1914}, Application men-A rils, 19.1 Serial No. mesa rotary drill stem in. horizontal .se ction, taken thelane of the line 4.- 4, Fig. 1.

413 e symbols refier to likc f t v they occur.

'I' will now 1 time more ful y so that others. skilled. in the table and bushing, with the sliiis'and weed? my 'invens '1 artto whichlt, appertains may apply "the I same.

y In the drawings-1 indicatessuitable skids or'sills for the; supportof the-bed-plateafl which is bolted; or otherw'se secured to said rotary} table and on which said tab e travels;

, sills;- The bed-plate 2113s an annular race .wr'ay' for the-rolls 3 whichq'sunport the 9 indicates a rotary table provided with a central opening, for the, reception "of bush.-

.on the dependentportion ofthe table is an ings and/for the-passage of the stem, of the drill, and surrounding said central opening annular race-way"? correspondingto raceway 2" for the reception of rolls 3011 which I said rotary tablei'9 rests; and travels.

l At; the upper partand under surface ofrotary table-9 is an annular rack 10 with which the pinion-"of. a driving shaft meshes to. "cause the'rotat'ion of the tab1e 9, and in the periphery of the table intermediate of said rack 10,'-and race-way 9, is an annular groove 9 for the reception 'of a-thrnst ring 11. 'The-thrustrring 11 maybe made in tions bolted or otherwise connected when 1n I place-in groove 9", and is -provided with pendent. straps or foot extensionsll 'by which it is bolted to the bed platei2 to sup port'thefrotary table 9 under thethriist of 12"i11di0flt68 pin-holes pins13lwhich drive-pins are securedto the a etby crow-pins 13*.passed through..radij' y p s il'pihiholesrin the plane ofthe a thrust groove 9?,"

to cause a bushing 14 to -'revolve with 5 The'd. pi i l-3' sl rve'a double purpose, I

'steingel- Fort-t :flattfiir iiPiltiibsMtlieyw-ar;

50" vention. Fig. 2 is a top 'plan view oi theiveitieally 'atethir upperielidsasyat 13 for the reception of said levers and are perforated for the reception of pins "on which the levels 1 pivoted.

14' indicates a bu opening ofthe rotary table 9 through which bushing bushingis loosely supported ,in the central I opening'pfl table'9'by means of a peripheral flange 'l", through openings. 14 in which pass the drive.pins-j;13 Ithat'ca'use the bushing 1;; to .rotateiwjithithe' table 9.

"Fromtime team-a drilling it teams-- nece'ssaryto pull out-,"add to and" run in the drill stem, and for this purpose in well drill ing what are termed. elevators are commonl employed, of whichitwo are usually require.

the grips of the respective elevators being i'alternatelyichangd onthe stem, as the drill stem 'israised or lowered. In'lieu of one of said-elevators, slips :for holding the stem 1 while the'gi-ipof the elevator is vchanged,

' fora combinationwwith; the bushin 2 having serrated 'faces'20" of .a form adapt maybe substitutedffor one of said elevators,

to meet the requirementqI have devised 14 :the slips 'shownin'the drawings. T esefslips 20=are of generai wedge 'for'm or taperugg to rconformto. the stem-'16 ofthe drill with whichwtheyrare' to be employed'in the 3 present instance concave and provided on their rear or outer 'sur'face with v ribs or fe'athejrs'fil) adapted to-engage and slide in the grooves- 14 on the 'inner face of bushing 1 Thisfeaturewillprevent any twisting'or: shifting ofthe= sli s. These slips 20 are beveled or rounded 0E at their lower inner corners as at 20? and "are each suspended from one-arm of a lever 21 which lever is v pivoted on one ofthe drive' pins 13, the connection between-the lever-andthe slip being in the form'bf a pin'andi an elon ated slot,

asindi cated'at 21., :Fi 1, in. or er to per- 11111313116 'sllps toiswin' hack and away from the stem 16, 'whenitt e slips are raised-by means of said levers 21. i This-change of positlon in the IinesFigQ llof the drawing.

The' construction being'substantially such as'hereinbefore pqinted'outtlie operation of ithedevices be: as follows::'. When drilh i'ng rotary motionwill be imparted? to the rotary table-"9 bya driving shaft and'a 'rbtatedz-zjrom the table' by suitable means into'r, rand "after the-z m'chanismiiiiiterpnsd ing' for the passes the drill stem 16, and said" in r io section. p If ibis-necessary or desired to. pull the ps is'zindicated in dotted 'I'claim out, is: 1 e

the. bushing drill stem 16 has been removed the slips 20 are inserted in the. bushing 14 with the ribs 20 thereof in the g rooye's 14 of bushing 14,

and the levers'21-whichsuspend and actuate the slips are inserted in slots 13 of driving pins 13 and pivoted on said driving pins.

down and will support the drill stemfso that the portion of stem 16 abovethe slips be unscrewed and lifted free for the or removal of an intermediate stem string of drill stem sections whenthe slips are in the osition shown in Fig. 1- of the drawings, .t e'l's lipswill notinterfere therewith, as owing .to the bevel 20-on' the inner lower corners 'ofthe slips and the suspension of the slips: on levers 21 the collars or couplings of the'drill stem sections will be enabled to force the slips upward and backward as indicated in dotted lines, Fig.1, which will readily permit the passage of the couplings of the-drill stemi.

When the drill stem is allowed to descend slightly the slips. will automatically grip and hold the-drill stem :s'c'athat-the grip of the elevator on-thedrill stem can be changed from time to tiine in pulling or running in will be required for such purposes.

In order-to release the. drill stem from the grip .ofthe slips at such times as the elevator has control of the drillfstem all that is '70 The sl ips 20 may then be allowed to wedge the drill stem so that but a single elevator necessary-to be done. is tomariipulate the levers 21 to elevate the-slips and lift them back into the os ition shown in dotted lines, Fig. I. of the rawings.

It will be. noted that in the construction herein described the engagement and disengagement of the drill. stem and rotary tableare automatically-effected by the manipulation of the drill stem, and conselating is avoided. -Having thus describedmy invention, what and desire tosecure by'LettersPatquently loss of time and labor in manipulii In a rotary machine, the: conibination with a'rotary table having-an axial opening for the passage of'a drill stem and providedon its; upper surface'with drive pins, of a. bushing-having openings for the passage of the drives,".'leyers pivotedlon the. drive pins-and sl ps suspended froi'nzthe levers, said slips provided with meansior a rotary drl ing machin'qthe combination-witha rotary table having anaxial beveled- 'lowcrI-asurfaces o. m ,:'of\-a-bushin"'hav'f an 0 nin in.

t eaxi s of. rota 011511 thifiaiblaiiixd sips suspended-in sai hushing said slips-having g s the In a 'otary'drillin machine, the con;-

' bination' of a rotary ta l'e having an axial 9pening a bushing having an axial open- 4. In 'a rotary drilling machine, the eombination with a rotary table having an axial opening-and provided on its upper surface. with drive pins, of a bushing havingopenings for the assa-gge of the drive pins, slips provided wit means for engaging the bushing and levers fulcrnmed on the drive pins said levers having loose pin and 'slot connections with the slips. 4

v In testimony whereof I aflix my signature, in the presence of two subscribin witnesses.

Witnesses: I K. H. SESSIONS, R. A. STEWART.

.7 EDGAR E. REVE. p p 

